What is the current water temperature in Holyhead?

Q: What is the current water temperature in Holyhead?

As of now, in Holyhead, the water temperature is 15.85°C. Swimming in water of this temperature is considered as extremely cold, and there's a substantial risk of hypothermia if exposed for more than a brief duration.

United Kingdom > Holyhead

Water temperature in Holyhead

Detailed information about the current water temperature in Holyhead. The trend over the last two weeks, daily averages, and precise forecast of the water temperature changes. Gain a deeper understanding of seasonal dynamics with monthly statistical analyses covering recent years.

60.5

°F

July 13, 22:08

Trend:

stable

Yesterday:

60.7°F

Tomorrow:

60.7°F

Sunrise:

05:07

Sunset:

21:41

Day Length:

16 h. 34 min.

Holyhead in July

Minimum:

47.0°F

Average:

48.8°F

Maximum:

50.3°F

Sea water temperature in Holyhead today

As of now, in Holyhead, the water temperature is 60.5°F. Swimming in water of this temperature is considered as extremely cold, and there's a substantial risk of hypothermia if exposed for more than a brief duration. Today's reading is 2.2°F higher than the average recorded on this particular day in recent years. The sea temperature remains approximately unchanged from yesterday. According to the forecast, we expect the temperature to rise a bit.

Recent sea temperature and forecast

Today's water temperature is notably higher than the average recorded over the past two weeks, indicating a significant warming trend. It is also close to the historical maximum temperature for this date. The maximum temperature recorded for this date was 59.8°F on 2025, while the historical minimum was 56.8°F on 2016.

latest data

last year

Observations from the last two weeks indicate that the water temperature was in proximity to the highest values recorded on those days in the past. The forecast for the upcoming week suggests a gradual increase. The average temperature is expected to rise up to 60.9°F, with minimum temperature starting at 60.7°F, while the maximum might reach 61.1°F.

Daily water temperature in Holyhead

Date	Current Year actual* / forecast**	last year	10 years average
Jun 29	59.6°F	58.4°F	57.1°F
Jun 30	59.3°F	58.5°F	57.1°F
Jul 1	59.6°F	58.0°F	57.0°F
Jul 2	59.1°F	58.3°F	57.3°F
Jul 3	59.2°F	58.6°F	57.5°F
Jul 4	59.3°F	58.4°F	57.6°F
Jul 5	59.6°F	58.5°F	57.5°F
Jul 6	59.2°F	58.8°F	57.6°F
Jul 7	58.5°F	58.7°F	57.4°F
Jul 8	59.7°F	59.1°F	57.8°F
Jul 9	59.8°F	58.7°F	57.9°F
Jul 10	60.0°F	58.5°F	58.0°F
Jul 11	60.3°F	59.5°F	58.2°F
Jul 12	60.7°F	59.6°F	58.4°F
Jul 13	60.5°F	59.8°F	58.4°F
Jul 14	60.7°F	60.4°F	58.5°F
Jul 15	60.7°F	60.3°F	58.6°F
Jul 16	60.9°F	60.5°F	58.7°F
Jul 17	60.9°F	60.6°F	58.7°F
Jul 18	61.1°F	60.5°F	58.9°F
Jul 19	61.1°F	60.9°F	58.9°F
Jul 20	61.1°F	60.2°F	59.0°F

* actual - actual temperature values

** forecast - projected values for the next week

Real-time coastal temperatures could deviate by several degrees from the provided readings. These deviations often become evident following intense rainfall or strong winds.

Our forecasting methodology leverages a mathematical model, that uses current water and weather conditions, historical records, wind intensity and direction.

Sea water temperature in Holyhead by month

In an average year, Holyhead offers no days when the water temperature is warm enough to swim comfortably.

The warmest water in Holyhead was recorded on August 29, 2025, reaching a 63.3°F. While the coldest temperature occurred on March 9, 2018, dipping to 43.0°F. The average readings by season are 48.5°F in Winter, 48.7°F in Spring, 58.2°F in Summer, and 57.9°F in Autumn.

Popular neighboring cities and resorts

City	Water temperature*	Distance**
Caernarfon	65.6°F	19mi
Bangor	63.6°F	21mi
Conwy	66.7°F	33mi
Douglas	61.6°F	59mi
Aberystwyth	68.1°F	66mi

* current water temperature in this city

** straight line distance from Holyhead